化简9x-{4x-[5x-(8x-2)]}的结果是( )A.2x-2B.8x+2C.16x+2D.2x+2
题型:单选题难度:一般来源:不详
化简9x-{4x-[5x-(8x-2)]}的结果是( )A.2x-2 | B.8x+2 | C.16x+2 | D.2x+2 |
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答案
原式=9x-4x+5x-8x+2=2x+2,故选D. |
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